Lamp



FIG. 1 is a perspective view from above of the lamp showing my new design;

FIG. 2 is a perspective view from below of the lamp;

FIG. 3 is a side view of the lamp, the other sides being a mirror image thereof;

FIG. 4 is a top view of the lamp; and,

FIG. 5 is a bottom view of the lamp.

The broken lines shown on the drawings depict portions of the lamp that form no part of the claimed design. 

The ornamental design for a lamp, as shown and described. 